Tuesday, Thursday and Saturday: Get your questions answered as part of the joint program “Gardening Help” in the Denver Botanic Gardens library, noon-4 p.m. Tuesday, Thursday and Saturday through September; Tuesday and Saturday in October; noon-4 p.m. Tuesday in November. Also offered on any DBG York Street free days. 1007 York St., 720-865-3575, e-mail gardeninghelp@botanicgardens.org; botanicgardens.org

Colorado Water Garden Society

June 1: Annual plant sale with various water lilies, bog plants, floating plants and tropical and hardy marginals along with potting materials and “pond critters,” 10 a.m.-2 p.m. Free admission. Staff members will be on hand to offer advice and answer questions. CWGS members get in the door at 9 a.m. Hudson Gardens, 6115 S. Santa Fe Drive, Littleton, 303-423-9216, colowatergarden society.org

June 7: “Discover Xeric Plants.” Times and locations vary. Call or visit the website for more information and to register. 720-859-4407, apps.auroragov.org/eventregistration

Birdsall & Co. June 14, reservation deadline June 7: “Water in the Garden,” learn how to introduce a water feature in your garden or renovate an existing one, 10:30 a.m.-12:30 p.m. $35, includes a free assessment. Reservations required. 1540 S. Broadway, 303-722-2535, birdsallgarden.com

Colorado Aquaponics

May 31: “Aquaponics Hands-On System Build Workshop,” learn various aquaponics system designs, 10 a.m.-5 p.m. $150; June 10: “Aquaponics Overview,” learn fundamentals of different system designs, 6-8 p.m. $40. The class is also offered June 26. Reservations required. Also offers free ongoing tours of The GrowHaus Aquaponics and Hydroponics systems at 10 a.m. every Friday and Saturday. 4751 York St., 720-515-4751, coloradoaquaponics.com

June 7: The 14th annual self-guided garden tour of more than 20 private and public gardens, 9 a.m.-4 p.m. $20, $15 in advance; free children 12 and under. A silent auction is included. The tour begins at The Conflict Center, 4140 Tejon St. Proceeds benefit the center’s school programs that work to reduce bullying and violence in schools. An after-party follows. 303-433-4983, conflictcenter.org

June 7:
Self-guided tour of private gardens in downtown Boulder, 10 a.m.-3 p.m. Master gardeners from Colorado State University will be on hand to answer questions. Backyard chicken coops and beehives are included. $15, free children 12 and under. Proceeds benefit Whittier International Elementary School, which serves international and low-income students. Boulder, whittiergardentour.com

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